Build a Audio Controlled Mains Switch Circuit Diagram

This is a simple Audio Controlled Mains Switch Circuit Diagram. Simple but very forkful project for audio liker circuit. This circuit will switch off the line supply to audio or video equipment if there has been no input signal for about 2 seconds. SI provides manual operation and S2 acts as a reset. This circuit allows for time to change a tape or compact disc.About 50 mV of audio signal is necessary. Read: Solid-State Switch For Dc-Operated Gadgets